Luminance Map ? Create HDR from 6 cubemap images

3DMinh

Hi,

Currently I have some very high quality cubemap (basically 6 images form a cube around the camera) and I want to convert it to HDRI to use in render. The cubemap images are in TIFF 32 BIT HDR format. Now from what I know, I need to transfer the "light" information to the HDRI.

So I do the following things:

1. I create 6 planes in DAZ to form a cube, put a camera in the middle

2. I apply Daz Uber Emissive Material to the planes, and load the cubemap images as Base Color map, Emission Color Map, set these color as white

Now I know that the color of the light from the cubemap images will be correct, how about the strength of the light, or the luminance ? Can I also load the cubemap image as luminance map? What kind of image should I load to the luminance map?

My final goal is that I want to make sure the final HDRI can have all the lighting information like the cubemap HDR 32 bit TIFF image, including the high dynamic range of light.

Thank you very much

3DMinh

Well turns out there's already a tool for it in blender :D I take it.

Thanks